該基因編碼的蛋白質參與了電離輻射和烷化劑對DNA單鏈斷裂的有效修復。該蛋白與DNA連接酶III、聚合酶β和聚ADP核糖聚合酶相互作用，參與堿基切除修復途徑。在生殖細胞減數分裂和重組過程中可能在DNA加工中起作用。該基因罕見的微衛星多態性與不同放射敏感性患者的癌癥有關。
The protein encoded by this gene is involved in the efficient repair of DNA single-strand breaks formed by exposure to ionizing radiation and alkylating agents. This protein interacts with DNA ligase III, polymerase beta and poly (ADP-ribose) polymerase to participate in the base excision repair pathway. It may play a role in DNA processing during meiogenesis and recombination in germ cells. A rare microsatellite polymorphism in this gene is associated with cancer in patients of varying radiosensitivity.